Window fastener



Patented Dec. 11, 1928 UNITED STATES PATENT, O-FFZICE.

LOUIS FREDERICK KLOOZ AND MANNING F. HATCHER, OF PITTSBURGH, PENN-SYLVANIA.

FINIDO'W FASTENER Application filed November 10,1926. Serial No.147,429.

The principal object of this invention is to provide sliding windowsashes with fastening means which will couple the upper and lower sashestogether with the upper sash in any position of adjustment, and whichwill prevent opening movement of either sash when so coupled together.

With this and other equally important objects in view, as willhereinafter be pointed out, reference will be had to the accompanyingdrawing forming a part. of this specification and wherein like referencenumerals designate corresponding parts throughout the several views, inwhich Fig. 1- is a vertical sectional view of a fragment of a windowframe and its two sashes, with the invention applied and shown inunfastening position,

Fig. 2 is a front elevation thereof,

Fig. 3 is a perspective view of the fastening element disassembled, and

Fig. 4 is a vertical sectional view through the invention detached fromthe sash.

In the drawing, reference character 2 designates the window frameprovided with the usual ways 3 and 4 for the sliding sashes 5 and 6, andwith the usual parting strip 7,

except that the latter is provided with a notch 8 just above the'planeof the meeting rail of the lower sash when the latter is completelylowered. Of course it will be understood that the parts 3, 4, 7 and 8are duplicated on the other side of the window as is usual. ,Upon themeeting rail of the lower sash. 5 at each side of the window is providedthe sash fastening device forming the foundation of this invention, andexcept for the fact that oneis right handed and the other left handed,their structures are the same, and detailed description of one willsuflice for the other. Each fastening device comprises a bearing member9, formed by doubling a sheet of metal to enfold a rockshaft 10, andhaving a base 12 and cut-out portion 14; within which latter operatedthe thumb or finger knob 15. This rock-shaft 10 has its opposite sideportions cut away as at 16 leaving a reduced flat web 17 provided with athreaded aperture 18 injwhich threads the stem 19 of the knob 15. Aribbon spring 20 has its free end bearing upon the base 12 and, afterbending around the web 17, has

its upper end secured between said knob 15 and web 17, with the knobstem 19 passed 'the upper sash When the device of Fig. 4; is assembled,

one on .each side of the lower sash, the. springs 20 will swing the footends 21 through the parting strip notches 8 into biting engagement withthe fac of the side rails of the upper sash, thereby fastening to thelower sash and because of the toe ends of the fastening devices cominginto engagement with the upper walls of the notches 8, preventingraising of the lower sash. This coupling together of the two sashes willprevent lowering of the upper sash, though it will permit raising of theupper sash at any time to closed position. If the upper sash is somewhatlowered when the two sashes are coupled together, the two sashes cannotbe raised as a whole to permit an intruder reaching in beneath the lowersash for any purpose, becausesuch movement of the sashes is prevented bycontact of the fastening devices with the upper wall of the notch 8.When it is desired to raise the lowor sash, the operator depresses bothknobs 15 thereby swinging the foot ends of the fastener to the -fullline position of Fig. 1,

wherein there will be no engagement with the upper wall of the notch bythe foot ends 21, and as the lowersash is raised, these foot device willmore or less mar the surface of the side rails of the upper sash, butthis de facement will be concealed almost entirely by the overlyingparting strips 7 and the foot ends 21.

Thus it will be apparent, that the upper sash may be lowered forventilation, and yet secured against any but closing movement, while thelower sash is secured against any movement, until the fastenings aremanually moved to unfastening positions, when both sashes may be movedas in any other window of the same general type. It will also beapparent that the invention can be cheaply made and easily applied, andthat it cannot be picked by an intruder from the outside, and since theonly alteration necessary to 2 1,695,108 be made in a standard window isthe notchgage a surface of the upper sash, and the ing of the partingstrips 7, the invention can portion of this surface engaged by themilled be a plied'to old as well as to new windows. ace being entirelyconcealed by the parting at is claimed is strip, with the exception ofthe portion vis- 6 1. 'The combination with upper and lower ible throughsaid notch, and a handle consliding window sashes and a parting stripnected to the latching member. v having a notch about midway of itsength, 2; A combination as claimed in claim 1, of a bearing membermounted on the'upper in which the first mentioned arm of said rail ofthe lower sash, a substantially L- latching member is provided'with aninter- 10 sha ed latching member having an arm pivmediate portionarranged within the bearota ly mounted in the bearing member for ing anda leaf spring'having one of its ends movement about a horizontal axis,and havsecured to' said intermediate portion and its I ing another armarranged beyond one end of other end contacting with the bearing forsaid bearing member and adapted to slide urging the latching member intosecuring 15 along the parting strip, or to extend through position.

the notch of the latter, to engage one wall In testimony whereof .weafiix our signaof said notch for preventing the lower sash tures. beingraised, the extremity of said last men- LOUIS FREDERICK KLOOZ.

tioned arm being milled to wedgingly en- F. HATCH ER.

